What is the reaction at the anode? The cathode? [2] b. In what direction are the electrons moving? [1] c. In which direction do the potassium ions migrate? The nitrate ions? [2]
What is the reaction at the anode? The cathode? [2] b. In what direction are the electrons moving? [1] c. In which direction do the potassium ions migrate? The nitrate ions? [2]
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Question
a. What is the reaction at the anode? The cathode? [2]
b. In what direction are the electrons moving? [1]
c. In which direction do the potassium ions migrate? The nitrate ions? [2]
Expert Solution
Step 1
- The standard reduction potential of Zinc i.e. Zn+2|| Zn = - 0.763
The standard reduction potential of Ni+2 || Ni = -0.250
The reduction potential of Nickel ion is large and less negative hence, will reduce and Zinc will oxidize.
Reduction occurs at Cathode. Hence reaction at cathode.
Ni+2 + 2e- → Ni
Oxidation reaction at Anode
Zn → Zn+2 + 2e-
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